PHI 2010 Lecture Notes - Lecture 4: Cogito Ergo Sum, Optical Illusion
Document Summary
Epistemology theory of knowledge: descartes" doubt. Some years ago [ ] i realized that it was necessary, once in the course of life, to demolish everything completely and start again right from the foundations . We have to be comprehensive and canvas all of our beliefs, and feed out which ones are good and bad. I should hold back my assent from opinions which are not completely certain and indubitable . Whatever i have up till now accepted as most true i have acquired either from the senses or through the senses . Argument from illusions : the senses occasionally deceive us with respect to objects which are very small or in the distance , optical illusion. The evil demon argument: it must be admitted that certain other even simpler and more universal things are real , if this happens to be a dream, there are still something"s i could know, e. g.
